Toward Heterogeneity-Aware Device-to-Device Data Dissemination over Wi-Fi Networks

Abstract

In the last few years, there has been an explosive growth of the number of mobile devices. This has come with a plethora of new applications and usages. Among these new usages, there are many occasions for which a content has to be disseminated to a large number of mobile devices (e.g., large-scale events providing a multi-media support, video streaming,. . .). To cope with network bandwidth limitations, new approaches, leveraging device-to-device (D2D) communications have emerged. Obviously, one of the main problem that D2D-based approaches have to face is the energy consumption. Furthermore, there is usually a huge heterogeneity among the devices: some may benefit of a good, fully charged battery while others may have only a couple of hours left before a power failure; the network bandwidth can also differ a lot. In this paper, based on a previous work, we propose an approach to take into account devices heterogeneity while disseminating data using D2D communications. Our simulations show that it is possible to spare the weakest batteries without wearing too much the good ones nor degrading too much the performance. Furthermore, taking into account the devices bandwidth capabilities can help to increase the dissemination speed.

Bandwidth Allocation and Service Differentiation in D2D Wireless Networks

“…The intensity λ ′ is chosen such that the mean interference powers for two networks with p k and p ′ k are the same, i.e., I =Ī ′ . Hence, from (18) and (19), it follows that…”

“…This results in an orthogonal bandwidth allocation to avoid mutual interference. Using a simulation approach, the work in [19] takes battery life into account and tries to maximize the number of completed transmissions as a function of already allocated bandwidth.…”

“…For another adaptive BA-based network with probabilities p ′ k , the mean interference power Ī′ can be calculated by replacing p k by p ′ k and λ by λ ′ in ( 18) and (19), where λ ′ is the intensity of the PPP corresponding to the network with p ′ k . The intensity λ ′ is chosen such that the mean interference powers for two networks with p k and p ′ k are the same, i.e., Ī = Ī′ .…”

A Group-Less and Energy Efficient Communication Scheme Based on Wi-Fi Direct Technology for Emergency Scenes

“…However, the proposed schemes in [29] and [35] cannot guarantee successful delivery and do not consider power saving. Reference [16] designs data dissemination policies in Wi-Fi based peer-to-peer networks. When disseminating a packet to network devices, a central server takes into account the battery capacities and bandwidth of devices, and then decides downlink paths for the packet.…”